ubuntu-cve-2019-19344
Vulnerability from osv_ubuntu
Published
2020-01-21 00:00
Modified
2025-07-16 04:55
Summary
Details
There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all samba 4.10.x versions before 4.10.12 and all samba 4.11.x versions before 4.11.5, essentially due to a call to realloc() while other local variables still point at the original buffer.
Severity
6.5 (Medium)
6.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "ctdb",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "ctdb-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libnss-winbind",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libnss-winbind-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libpam-winbind",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libpam-winbind-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libparse-pidl-perl",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libparse-pidl-perl-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libsmbclient",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libsmbclient-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libsmbclient-dev",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libsmbclient-dev-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libwbclient-dev",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libwbclient-dev-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libwbclient0",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "libwbclient0-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "python-samba",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "registry-tools",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "registry-tools-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-common",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-common-bin",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-common-bin-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-dbg",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-dev",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-dev-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-dsdb-modules",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-dsdb-modules-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-libs",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-libs-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-testsuite",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-testsuite-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-vfs-modules",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "samba-vfs-modules-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "smbclient",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "smbclient-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "winbind",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
},
{
"binary_name": "winbind-dbgsym",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "samba",
"purl": "pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.16.04.24?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.3.11+dfsg-0ubuntu0.16.04.24"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:4.1.17+dfsg-4ubuntu2",
"2:4.1.20+dfsg-1ubuntu1",
"2:4.1.20+dfsg-1ubuntu2",
"2:4.1.20+dfsg-1ubuntu3",
"2:4.1.20+dfsg-1ubuntu5",
"2:4.3.3+dfsg-1ubuntu1",
"2:4.3.3+dfsg-1ubuntu2",
"2:4.3.3+dfsg-1ubuntu3",
"2:4.3.6+dfsg-1ubuntu1",
"2:4.3.8+dfsg-0ubuntu1",
"2:4.3.9+dfsg-0ubuntu0.16.04.1",
"2:4.3.9+dfsg-0ubuntu0.16.04.2",
"2:4.3.9+dfsg-0ubuntu0.16.04.3",
"2:4.3.11+dfsg-0ubuntu0.16.04.1",
"2:4.3.11+dfsg-0ubuntu0.16.04.3",
"2:4.3.11+dfsg-0ubuntu0.16.04.5",
"2:4.3.11+dfsg-0ubuntu0.16.04.6",
"2:4.3.11+dfsg-0ubuntu0.16.04.7",
"2:4.3.11+dfsg-0ubuntu0.16.04.8",
"2:4.3.11+dfsg-0ubuntu0.16.04.9",
"2:4.3.11+dfsg-0ubuntu0.16.04.10",
"2:4.3.11+dfsg-0ubuntu0.16.04.11",
"2:4.3.11+dfsg-0ubuntu0.16.04.12",
"2:4.3.11+dfsg-0ubuntu0.16.04.13",
"2:4.3.11+dfsg-0ubuntu0.16.04.15",
"2:4.3.11+dfsg-0ubuntu0.16.04.16",
"2:4.3.11+dfsg-0ubuntu0.16.04.17",
"2:4.3.11+dfsg-0ubuntu0.16.04.18",
"2:4.3.11+dfsg-0ubuntu0.16.04.19",
"2:4.3.11+dfsg-0ubuntu0.16.04.20",
"2:4.3.11+dfsg-0ubuntu0.16.04.21",
"2:4.3.11+dfsg-0ubuntu0.16.04.23"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "ctdb",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "ctdb-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libnss-winbind",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libnss-winbind-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libpam-winbind",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libpam-winbind-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libparse-pidl-perl",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libsmbclient",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libsmbclient-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libsmbclient-dev",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libwbclient-dev",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libwbclient0",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "libwbclient0-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "python-samba",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "python-samba-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "registry-tools",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "registry-tools-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-common",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-common-bin",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-common-bin-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-dev",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-dsdb-modules",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-dsdb-modules-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-libs",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-libs-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-testsuite",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-testsuite-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-vfs-modules",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "samba-vfs-modules-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "smbclient",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "smbclient-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "winbind",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
},
{
"binary_name": "winbind-dbgsym",
"binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "samba",
"purl": "pkg:deb/ubuntu/samba@2:4.7.6+dfsg~ubuntu-0ubuntu2.14?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:4.6.7+dfsg-1ubuntu3",
"2:4.7.1+dfsg-1ubuntu1",
"2:4.7.3+dfsg-1ubuntu1",
"2:4.7.4+dfsg-1ubuntu1",
"2:4.7.6+dfsg~ubuntu-0ubuntu1",
"2:4.7.6+dfsg~ubuntu-0ubuntu2",
"2:4.7.6+dfsg~ubuntu-0ubuntu2.2",
"2:4.7.6+dfsg~ubuntu-0ubuntu2.4",
"2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
"2:4.7.6+dfsg~ubuntu-0ubuntu2.6",
"2:4.7.6+dfsg~ubuntu-0ubuntu2.7",
"2:4.7.6+dfsg~ubuntu-0ubuntu2.9",
"2:4.7.6+dfsg~ubuntu-0ubuntu2.10",
"2:4.7.6+dfsg~ubuntu-0ubuntu2.11",
"2:4.7.6+dfsg~ubuntu-0ubuntu2.13"
]
}
],
"aliases": [],
"details": "There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all samba 4.10.x versions before 4.10.12 and all samba 4.11.x versions before 4.11.5, essentially due to a call to realloc() while other local variables still point at the original buffer.",
"id": "UBUNTU-CVE-2019-19344",
"modified": "2025-07-16T04:55:13Z",
"published": "2020-01-21T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-19344"
},
{
"type": "REPORT",
"url": "https://www.samba.org/samba/security/CVE-2019-19344.html"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4244-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-19344"
}
],
"related": [
"USN-4244-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2019-19344"
],
"withdrawn": "2025-07-18T16:45:29Z"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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